\documentclass[tikz,border=2mm]{standalone}
\usepackage{array,amsmath,mathptmx,xcolor,bbding,pifont,colortbl,amssymb}
\usepackage[UTF8]{ctex}
\newcolumntype{C}[1]{>{\centering\let\newline\\\arraybackslash\hspace{0pt}}m{#1}}
% 只需要这个就可以
\usepackage[thicklines]{cancel}

% 可以设置线条颜色，默认是黑色
\usepackage{xcolor}
\renewcommand{\CancelColor}{\color{red}} 
\usepackage{tikz-cd}
\usepackage{tikz,graphicx,subfig,caption} % Required for drawing custom shapes
\usetikzlibrary{fit,matrix,chains,arrows,shapes,positioning,arrows.meta,chains,shadows,shapes.callouts,decorations.text,shapes.symbols,shapes.misc, positioning,decorations.pathreplacing,calc,backgrounds}
\arrayrulecolor{red}
% 设置浅蓝色
\definecolor{lightblue1}{RGB}{175, 175, 237}
\definecolor{lightgreen1}{RGB}{226, 246, 186}
\definecolor{lightpink}{RGB}{255, 202, 203}
\definecolor{lightblue2}{RGB}{205, 235, 255}
\definecolor{lightyellow}{RGB}{255, 254, 208}
% 设定删除线颜色
\renewcommand{\CancelColor}{\color{blue}}

\begin{document}
	\begin{tikzpicture}[>=latex,every node/.style={inner sep=0.2em}]
		\node[align=left,rounded corners=0.5em] at (0,0) (point1){
			\hspace{1em}quat(E)  \\
			$q_1$\hspace{0.5em}(if\hspace{0.5em}res(E)\hspace{0.5em}$\_$\hspace{0.5em}$\_$\hspace{0.5em}) \\
			\hspace{1em}quat(S1) \\
			$q_2$\hspace{0.5em}(el\hspace{0.5em}$\_$\hspace{0.5em}$\_$\hspace{0.5em}$\_$\hspace{0.5em}) \\
			\hspace{1em}quat(S2) \\
			$q_3$\hspace{0.5em}(ie\hspace{0.5em}$\_$\hspace{0.5em}$\_$\hspace{0.5em}$\_$\hspace{0.5em})
			
		};
		
		\begin{pgfonlayer}{background}
			\node [draw=black,fill=white ,rectangle, inner sep=0.2em,line width=0.0025em][fit=(point1)](box1){};
		\end{pgfonlayer}
		
		\draw[->,color=blue] ([xshift=-1.5em,yshift=2.1em]point1.east) -- ([xshift=-0.1em,yshift=2.1em]point1.east) -- ([xshift=-0.1em,yshift=-1.8em]point1.east) -- ([xshift=-3.7em,yshift=-1.8em]point1.east);
		\draw[->,color=red] ([xshift=-3.3em,yshift=-0.7em]point1.east) -- ([xshift=-0em,yshift=-0.7em]point1.east) -- ([xshift=-0em,yshift=-3.2em]point1.east) -- ([xshift=-2.7em,yshift=-3.2em]point1.east);
		
		
		
	\end{tikzpicture}
\end{document}